package com.mall.concurrency.example.atomic;

import com.mall.concurrency.annoations.NotThreadSafe;
import com.mall.concurrency.annoations.ThreadSafe;
import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Semaphore;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;

@Slf4j
@ThreadSafe
public class AtomicExample2 {
    //请求总数
    public static  int clientToatal  =5000;
    //同时并发执行的线程数量
    public static int threadTotal =200;
    public static AtomicLong count = new AtomicLong(0);
    public static void main(String[] args) throws InterruptedException {
        ExecutorService executorService = Executors.newCachedThreadPool();
        final Semaphore semaphore = new Semaphore(threadTotal);
        final CountDownLatch countDownLatch = new CountDownLatch(clientToatal);
        for(int i=0;i<clientToatal;i++){
            executorService.execute(()->{
                try {
                    semaphore.acquire();
                    add();
                    semaphore.release();
                } catch (Exception e) {
                    e.printStackTrace();
                }
                countDownLatch.countDown();
            });

        }
        countDownLatch.await();
        System.out.println("count:{}"+count.get());
        executorService.shutdown();
    }

    private static void add(){
        count.incrementAndGet();
    }
}
